#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#pragma GCC optimize("unroll-loops")
//#pragma warning(disable : 4996)
#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<queue>
#include<map>
#include<math.h>
#include<iomanip>
#include<set>
#include<numeric>
#include<cstring>
#include<cstdio>
#include<functional>
#include<bitset>
#include<limits.h>
#include<cassert>
#include<iterator>
#include<complex>
#include<stack>
#include<unordered_map>
#include<unordered_set>
#include<time.h>
#include<random>
#include<array>


using namespace std;

#define REP(i, n) for(int i = 0;i < n;++i)
#define REPR(i, n) for(int i = n-1;i >= 0;--i)
#define FOR(i, m, n) for(int i = m;i < n;++i)
#define FORR(i, m, n) for(int i = m-1;i >= n;--i)
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end());
#define REVERSE(v,n) reverse(v,v+n);
#define VREVERSE(v) reverse(v.begin(), v.end())
#define ll long long
#define print(x) cout<<(x)<<'\n'
#define pe(x) cout<<(x)<<" "
#define DEBUG(x) cout<<#x<<": "<<x<<endl
#define lb(v,n) lower_bound(v.begin(), v.end(), (n))
#define ub(v,n) upper_bound(v.begin(), v.end(), (n))
#define int long long
//#define double long double
#define all(x) (x).begin(), (x).end()
#define print_space(v) REP(i,v.size())cout << v[i] << ((i == v.size() - 1) ? "\n" : " ")
template<typename T1, typename T2> inline void chmin(T1 & a, T2 b) { if (a > b) a = b; }
template<typename T1, typename T2> inline void chmax(T1& a, T2 b) { if (a < b) a = b; }
typedef pair<int, int>pii;
typedef array<int, 3> arr3;
std::random_device rd;
std::mt19937 mt(rd());
constexpr ll MOD = 1e9 + 7; constexpr int MAX = 2000020;
const double pi = acos(-1); constexpr double EPS = 1e-8;
constexpr ll INF = 1e18;
void yes(bool c) { if (c)print("Yes"); else print("No"); };

//const int mod = 1000000007;
const int mod = 998244353;
struct mint {
	ll x; // typedef long long ll;
	mint(ll x = 0) :x((x%mod + mod) % mod) {}
	mint operator-() const { return mint(-x); }
	mint& operator+=(const mint a) {
		if ((x += a.x) >= mod) x -= mod;
		return *this;
	}
	mint& operator-=(const mint a) {
		if ((x += mod - a.x) >= mod) x -= mod;
		return *this;
	}
	mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this; }
	mint operator+(const mint a) const { return mint(*this) += a; }
	mint operator-(const mint a) const { return mint(*this) -= a; }
	mint operator*(const mint a) const { return mint(*this) *= a; }
	mint pow(ll t) const {
		if (!t) return 1;
		mint a = pow(t >> 1);
		a *= a;
		if (t & 1) a *= *this;
		return a;
	}

	// for prime mod
	mint inv() const { return pow(mod - 2); }
	mint& operator/=(const mint a) { return *this *= a.inv(); }
	mint operator/(const mint a) const { return mint(*this) /= a; }
};
istream& operator>>(istream& is, const mint& a) { return is >> a.x; }
ostream& operator<<(ostream& os, const mint& a) { return os << a.x; }


template<typename T>
struct edge {
	int src, to;
	T cost;
	edge(int to) :src(-1), to(to), cost(1) {}
	edge(int to, T cost) :src(-1), to(to), cost(cost) {}
	edge(int src, int to, T cost) :src(src), to(to), cost(cost) {}
	edge &operator=(const int &x) {
		to = x;
		return *this;
	}
	operator int() const { return to; }
};
template<typename T>
using Edges = vector<edge<T>>;
template<typename T>
using Graph = vector<Edges<T>>;

template<typename T>
struct HeavyLightDecomposition {
	Graph<T> G;

	//next: child which makes heavy edge
	//head: head of heavy edge
	vector<int>sz, par, next, head, depth, index;
	int N;
	HeavyLightDecomposition(Graph<T> &g) :G(g) {
		N = G.size();
		sz.assign(N, 0);
		par.assign(N, 0);
		next.assign(N, -1);
		head.assign(N, 0);
		depth.assign(N, 0);
		index.assign(N, 0);
		build();
	}
	int dfs(int n) {
		int siz = 1, mx = 0;
		for (auto e : G[n]) {
			int nxt = e.to;
			if (nxt == par[n])continue;
			par[nxt] = n;
			siz += dfs(nxt);
			if (sz[nxt] > mx) {
				mx = sz[nxt];
				next[n] = nxt; //heavy edge
			}
		}
		return sz[n] = siz;
	}
	void assign_number() {
		queue<pair<int, int>>que; // push the head of heavy edge
		que.push({ 0,0 });
		int idx = 0;
		while (!que.empty()) {
			int n = que.front().first;
			int d = que.front().second;
			que.pop();
			index[n] = idx++;
			depth[n] = d;
			int h = n;
			head[n] = n;
			while (next[n] != -1) {
				for (auto e : G[n]) {
					int nxt = e.to;
					if (nxt == par[n] || nxt == next[n])continue;
					que.push({ nxt,d + 1 });
				}
				n = next[n];
				index[n] = idx++;
				depth[n] = d;
				head[n] = h;
			}
		}
	}
	void build() {
		dfs(0);
		assign_number();
	}
	int lca(int u, int v) {
		if (u == v)return u;
		if (depth[u] > depth[v])swap(u, v);
		while (depth[u] < depth[v]) {
			v = par[head[v]];
		}
		//if u and v begong to the same array
		if (head[u] == head[v]) {
			if (index[u] < index[v])return u;
			else return v;
		}
		else {
			u = par[head[u]];
			v = par[head[v]];
			return lca(u, v);
		}
	}
	vector<pair<int, int>>query(int u, int v) {
		vector<pair<int, int>>ret;
		if (depth[u] > depth[v])swap(u, v);
		while (depth[u] < depth[v]) {
			int l = index[head[v]], r = index[v] + 1;
			ret.push_back({ l,r });
			v = par[head[v]];
		}
		//if u and v begong to the same array
		if (head[u] == head[v]) {
			if (index[u] > index[v])swap(u, v);
			int l = index[u], r = index[v] + 1;
			ret.push_back({ l,r });
		}
		return ret;
	}
};
template<typename T>
struct SegmentTree {
	int n;
	T unit;
	vector<T>dat;
	function<T(T, T)> func;
	SegmentTree(const int N, T _unit, function<T(T, T)> _func)
		:unit(_unit), func(_func) {
		n = 1;
		//簡単のため、要素数を2のべき乗に
		while (n < N)n *= 2;
		dat.assign(2 * n, unit);
	}

	void update(int k, T a) {
		k += n - 1;//葉の節点
		dat[k] = a;
		//上りながら更新
		while (k > 0) {
			k = (k - 1) / 2;
			dat[k] = func(dat[k * 2 + 1], dat[k * 2 + 2]);
		}
	}
	T _query(int a, int b, int k, int l, int r) {
		//[a,b)と[l,r)が交差していなければ、funcに影響を与えない値を返す
		if (r <= a || b <= l)return unit;
		//[a,b)が[l,r)を完全に含んでいれば、この節点の値
		if (a <= l && r <= b)return dat[k];
		else {
			int vl = _query(a, b, k * 2 + 1, l, (l + r) / 2);
			int vr = _query(a, b, k * 2 + 2, (l + r) / 2, r);
			return func(vl, vr);
		}
	}
	//[a,b)
	T query(int a, int b) {
		return _query(a, b, 0, 0, n);
	}
};
//auto f = [](int a, int b) {return a + b; };
//SegmentTree<int>seg(N,0,f);

const int SIZE = 400;
ll C[100010], A[100010];
int who[1000010];
int par[101010];
//[l,r)
int calc_par(int l, int r,HeavyLightDecomposition<int>&hl) {
	int p = A[l];
	int idx = l;
	while (idx < r) {
		if (idx%SIZE == 0 && idx + SIZE <= r) {
			p = hl.lca(p, idx / SIZE);
			idx += SIZE;
		}
		else {
			p = hl.lca(p, A[idx]);
			idx++;
		}
	}
	return p;
}
int N;
int update(int idx,HeavyLightDecomposition<int>&hl) {
	int i = idx / SIZE;
	par[i] = A[i*SIZE];
	FOR(j, i*SIZE, i*SIZE + SIZE) {
		if (j >= N)break;
		par[i] = hl.lca(par[i], A[j]);
	}
	return par[i];
}
void solve() {

	cin >> N;
	int K, Q; cin >> K >> Q;
	Graph<int>G(N);
	REP(i, N)cin >> C[i];
	REP(i, K) {
		cin >> A[i];
		A[i]--;
		who[A[i]] = i;
	}
	REP(i, N - 1) {
		int u, v; cin >> u >> v;
		u--, v--;
		if (u > v)swap(u, v);
		edge<int> e(v);
		G[u].push_back(e);
		edge<int>e2(u);
		G[v].push_back(e2);
	}
	auto f = [](int a, int b) {return max(a, b); };
	SegmentTree<int>seg(N, 0, f);
	//REP(i, N)seg.update(i, C[i]);
	HeavyLightDecomposition<int>hl(G);
	REP(i, N)seg.update(hl.index[i], C[i]);
	int cnt = (N + SIZE - 1) / SIZE;
	REP(i, cnt) {
		par[i] = A[i * SIZE];
		REP(j, SIZE) {
			int v = i * SIZE + j;
			if (v >= N)break;
			int p = hl.lca(par[i], A[v]);
			par[i] = p;
		}
	}
	REP(_, Q) {
		int T; cin >> T;
		if (T == 2) {
			int l, r; cin >> l >> r;
			l--, r;
			int p = calc_par(l, r,hl);
			vector<pii>ps = hl.query(0, p);
			int res = 0;
			//cerr << "par:" << p + 1 << endl;
			for (auto pp : ps) {
				//cerr << pp.first+1 << " " << pp.second+1 << endl;
				res = max(res, seg.query(pp.first, pp.second));
			}
			//cerr << "par:" << p + 1 << endl;
			//int res = seg.query(0, p + 1);
			print(res);
		}
		else {
			int x, y; cin >> x >> y;
			x--; y--;
			A[x] = y;
			update(x,hl);
		}
	}
}

signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	//int q; cin >> q;
	//while (q--)
	solve();
}